QCD phase transition with non-extensive NJL model in the strong magnetic field
Abstract
In this work we make use of the Nambu-Jona-Lasinio model to investigate thermodynamic properties of magnetized three-flavor quark matter. The non-equilibrium Tsallis distribution is characterized by a dimensionless non-extensive parameter . We find that the system always undergoes a crossover transition for all given values and the pseudo-critical temperature decreases with the increasing non-extensive parameter. We show that the variation of the pressure and its anisotropy in parallel and perpendicular directions. However, the diamagnetic nature appears within a certain temperature range at zero chemical potential. Moreover, strong magnetic fields can affect the property of a non-extensive system by changing the magnetization significantly. At high temperatures, the paramagnetic nature always occur no matter how strong the magnetic field is. Finally, we study the effects of non-extensive parameter on the trace anomaly and the speed of sound of the system.
Keywords
Cite
@article{arxiv.2410.23550,
title = {QCD phase transition with non-extensive NJL model in the strong magnetic field},
author = {Jia Zhang and Xin-Jian Wen},
journal= {arXiv preprint arXiv:2410.23550},
year = {2024}
}